JPS63125413U - - Google Patents
Info
- Publication number
- JPS63125413U JPS63125413U JP1653487U JP1653487U JPS63125413U JP S63125413 U JPS63125413 U JP S63125413U JP 1653487 U JP1653487 U JP 1653487U JP 1653487 U JP1653487 U JP 1653487U JP S63125413 U JPS63125413 U JP S63125413U
- Authority
- JP
- Japan
- Prior art keywords
- acoustic wave
- surface acoustic
- input
- wave transducer
- interdigital electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010897 surface acoustic wave method Methods 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Description
第１図は本考案の一実施例の構成を示す平面図
、第２図は本実施例における入力側弾性表面波変
換器を示す拡大平面図、第３図は本実施例の挿入
損失―変換器総数特性図、第４図は従来の弾性表
面波フイルタの構成を示す平面図、第５図は従来
の入力側弾性表面波変換器を示す拡大平面図、第
６図は従来の挿入損失―変換器総数特性図である
。
１，４４…入力側弾性表面波変換器、２，４６
…弾性表面波、４１…圧電基板、４２…入力端子
、４３…出力端子、４５…出力側弾性表面波変換
器。
Fig. 1 is a plan view showing the configuration of an embodiment of the present invention, Fig. 2 is an enlarged plan view showing the input side surface acoustic wave transducer in this embodiment, and Fig. 3 is an insertion loss-conversion of this embodiment. Fig. 4 is a plan view showing the configuration of a conventional surface acoustic wave filter, Fig. 5 is an enlarged plan view showing a conventional input-side surface acoustic wave transducer, and Fig. 6 shows the conventional insertion loss. It is a characteristic diagram of the total number of converters. 1,44...Input side surface acoustic wave transducer, 2,46
... surface acoustic wave, 41 ... piezoelectric substrate, 42 ... input terminal, 43 ... output terminal, 45 ... output side surface acoustic wave transducer.
Claims (1)
互にかみ合うように配列して構成すると共に各前
記すだれ状電極指に入力された電気信号を弾性表
面波に変換する入力側弾性表面波変換器と、該入
力側弾性表面波変換器と同じ構成であつて弾性表
面波を電気信号に変換する出力側弾性表面波変換
器とを、圧電基板上に各々交互に配設してなる弾
性表面波フイルタにおいて、 最外側に位置する前記入力側弾性表面波変換器
もしくは前記出力側弾性表面波変換器のいずれか
一方の前記すだれ状電極指を複数に並列分割した
ことを特徴とする弾性表面波フイルタ。[Claims for Utility Model Registration] A plurality of interdigital electrode fingers are arranged so as to face each other and interlock with each other alternately, and an electric signal input to each interdigital electrode finger is converted into a surface acoustic wave. An input-side surface acoustic wave transducer and an output-side surface acoustic wave transducer that has the same configuration as the input-side surface acoustic wave transducer and converts the surface acoustic wave into an electric signal are alternately arranged on a piezoelectric substrate. In the surface acoustic wave filter, the interdigital electrode fingers of either the input surface acoustic wave transducer or the output surface acoustic wave transducer located at the outermost side are divided into a plurality of parallel parts. Features of surface acoustic wave filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1653487U JPS63125413U (en) | 1987-02-09 | 1987-02-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1653487U JPS63125413U (en) | 1987-02-09 | 1987-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63125413U true JPS63125413U (en) | 1988-08-16 |
Family
ID=30808478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1653487U Pending JPS63125413U (en) | 1987-02-09 | 1987-02-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63125413U (en) |
-
1987
- 1987-02-09 JP JP1653487U patent/JPS63125413U/ja active Pending
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